Internet of Things Stack Exchange
Internet of Things Stack Exchange

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1500 questions
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1 answer

Creating a private subnet by assigning IP's through DHCP

I am using an esp8266 wifi module if that matters. What I intend to do is connect the module to my home router and have other modules connect to this module and form a second layer, and to this second layer other modules can connect forming a third…
solomon
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How can I set up main and failover MQTT subscribers for a job queue with AWS IoT?

I have an system where a client (let's call it ClientA) can publish requests to a particular MQTT topic. The broker, in case it matters, is Amazon Web Services. Then I have another client (let's call it MainSubscriber) which is always subscribed to…
Paul Grinberg
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Difference Between ZigBee and Z-Wave?

I've have installed Z-Wave switches and outlets in a few places around my house. However, I noticed when purchasing the devices that there were a couple of different wireless options available in the brand I was looking at. I'd be curious to know…
tbm0115
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Keil uVision MDK-Lite, STM32F072B-Discovery board and flash API

I'm using MDK-Lite Version 5.23 with a STMicroelectronics STM32F072B-Disco "Discovery" board and I am trying to use the Flash Example provided by the Discovery samples. I've used this board and toolchain for other examples and I have coded some SPI…
netskink
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Why don't we have more 3G+ modem options available?

Spiritually similar to the question here Embedded modem options Why is there such an enormous barrier to getting into something like a Snapdragon 410 with onboard LTE? After extensive research, LTE-equipped SoCs are everywhere, yet not available…
Malachi
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~200 Devices on Single AP

I have a project where I would like to connect ~200 devices to a single AP. Each of these devices will be offset in their communication so that there will only be approximately 10 devices relaying TCP packets to a server at any given time. I would…
Wolfgang_Horton
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6 answers

Measure people density in an outdoor area

I'm currently working on a project and I need to measure how many people are in an area without any personal interaction. Basically I need to do this in parks. I don't have lot of budget for each place. All outdoor places. I want to control possible…
Dani Polo
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Should I use special characters in MQTT topics?

I have used MQTT to connect all my ESP8266 units but I have a general question regarding topics. According to www.hivemq.com: "Leading forward slash" / should be avoided. Spaces should be avoided. Use only ASCII characters. Embed a unique…
Jimmy Westberg
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How do I factory reset my Google Home?

I want to clear all of the current settings,configurations and data on my Google Home device and return it back to the original out of the box (factory default) state. Is there any way to do this?
Henry WH Hack v3.0
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How can I detect Alexa's current state or change its current state with an external device?

I want to have custom wake-word for Alexa so I want to interface this Amazon Echo with an external device. I am wondering if it is possible to create a proxy device that would wake up Alexa if I give voice command to the proxy device. More precisely…
Bence Kaulics
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Just got a Google Home - What smart hub(s) do I need?

I just got a Google Home, and I'm looking into setting up a smart home that I can control with voice commands via compatible services. But I have a few questions before I sink a bunch of money into bad ideas or things I don't need. The main thing…
wile_e8
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How can I boot an Xbox One remotely using Amazon Alexa?

I've been researching how to control an Xbox One through Alexa, but I can't find a straightforward way to achieve this. A reddit thread suggests using the Blumoo remote, but I'd rather not pay for more hardware if I can avoid it. This article from…
Aurora0001
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Should I build isolated networks for IoT devices vs. regular computers?

In a home environment that will have both traditional computing activities (desktop and laptop computers, NAT storage devices, printers, etc.) and IoT devices (internet connected thermometers, refrigerators, toasters, etc.) Is it possible in a…
Caleb
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TRÅDFRI lights and multiple swiches

I have 3 TRÅDFRI 30W drivers in my kitchen, and succeeded in pairing all of them to the same remote. However, if I pair a lamp to a 2nd remote, it stops responding to the first one. I was hoping to use 2 remotes, to get 2-way control. From the…
Sean Houlihane
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Has anyone got the transparent MQTT gateway running in Azure IoT Edge?

One of the main purposes of IoT Edge is to localize the computation of the steady state (normal conditions) to the edge rather than in the cloud. Has anyone got Azure IoT Edge working as a "transparent" gateway as detailed…
Gambit Support
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